Airworthiness Directive · Amendment 39-13668 · McDonnell Douglas Model MD-11 and -11F Airplanes
McDonnell Douglas Model MD-11 and -11F Airplanes
Model MD-11 and -11F airplanes, as listed in Boeing Service Bulletin MD11-24-128, Revision 05, dated June 3, 2003; certificated in any category.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain McDonnell Douglas Model MD-11 airplanes, that currently requires, among other actions, replacement of the existing air driven generator (ADG) wire assembly in the right air conditioning compartment with a certain new wire assembly. This amendment requires replacement of the ADG wiring and two associated clamps; inspection of the ADG wiring for correct wire identification, riding, and damage, and inspection of the associated routing/clamps for correct installation; and corrective actions if necessary. The actions specified by this AD are intended to prevent loss of the charging capability of the airplane battery due to chafing. Loss of the charging capability of the airplane battery, coupled with a loss of all normal electrical power, could prevent continued safe flight and landing of the airplane. This action is intended to address the identified unsafe condition.
